Home / 100,886.96-139,222.29-55,569.18

Finding the Fourth Proportional to 100,886.96, 139,222.29 and 55,569.18

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Solution

The fourth proportional to 100,886.96, 139,222.29 and 55,569.18 is: 76,684.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,886.96 : 139,222.29 = 55,569.18 : x
  2. Step 2: Convert to fraction form
    100,886.96/139,222.29 = 55,569.18/x
  3. Step 3: Cross multiply
    100,886.96x = 139,222.29 × 55,569.18
  4. Step 4: Simplify right side
    100,886.96x = 7,736,469,223.49
  5. Step 5: Solve for x
    x = 7,736,469,223.49/100,886.96
  6. Step 6: Final answer
    x = 76,684.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.